河北省安国市药材田与粮作田土壤硝酸盐的累积特征

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	河北省安国市药材田与粮作田土壤硝酸盐的累积特征
	赵姣姣; 刘文科; 刘义飞
刊名	中国农业气象
	2013
卷号	34 期号:3 页码:301-305
关键词	安国市硝酸盐药材田粮作田土壤深度
ISSN号	1000-6362
其他题名	Characteristic of Soil Nitrate Accumulation on Herbal Field and Grain Field in Anguo City, Hebei Province
英文摘要	通过田间取样,研究分析河北省安国市耕地土壤中硝酸盐含量累积特征,以了解当前耕作条件下药材田与粮作田土壤中硝酸盐含量现状,为科学合理施用氮肥提供依据。经分析测定,在所选药材田中0-20、20-40和40-60cm土层中硝酸盐含量分别为37.96~436.86、26.27~435.64和12.91~383.23mg·kg~(-1),粮作田相应土层中硝酸盐含量分别为13.71~184.65、8.14~198.11和6.04~145.81mg·kg~(-1)。结果表明,(1)药材田0-20cm土层中硝酸盐含量极显著高于20-40cm土层(P<0.01),也显著高于40-60cm土层(P<0.05),但20-40和40-60cm两个土层间硝酸盐含量无显著差异。(2)粮作田20-40cm土层中硝酸盐含量稍高于0-20和40-60cm,但3个土层间硝酸盐含量差异不显著。(3)药材田3个土层中硝酸盐含量均高于粮作田,其差异极显著(P<0.01),且土壤中硝酸盐含量随土壤深度的增加而降低。35%的药材田表层土壤样品中硝酸盐含量超过临界水平,10%已严重污染,而粮作田土壤样品中硝酸盐含量基本处于安全范围内。可见,安国市药材田土壤中硝酸盐的累积水平已超过粮作田,硝酸盐累积状况非常严重。; In order to provide scientific guidance for reasonable nitrogen fertilizer application, the soil nitrate accumulation of croplands under Chinese medicinal plants and food crops in Anguo city,Heibei province was investigated by field sampling and chemical analysis. The results showed that ranges of nitrate contents in 0-20, 20-40 and 40-60cm layers of herbal fields were 37.96-436.86, 26.27-435.64 and 12.91-383.23mg·kg~(-1), while ranges of nitrate contents in 0-20, 20-40 and 40-60cm layers of grain fields were 3.71-184.65, 8.14-198.11 and 6.04-145.81mg·kg~(-1),respectively. The results indicated that (1) nitrate content in 0-20cm soil layer of herbal fields were higher than that of 20-40cm(P<0.01)and 40-60cm soil layers(P<0.05), while soil nitrate contents between 20-40 and 40-60cm soil layers showed no significant difference; (2) Soil nitrate content in 20-40cm soil layer of grain fields were slightly higher than that of, but no difference was found between 0-20 and 40-60cm soil layers; (3) Soil nitrate content decreased with the soil depth for two kinds of croplands, and soil nitrate content in herbal fields was significantly higher than that of grain fields at the same soil layer (P <0.01). There were 35% that their nitrate contents topsoil had exceeded critical value of safety. Also, about 10% herbal fields had been seriously polluted by nitrate. The data showed that soil nitrate of grain fields were in safe range basically. To conclude, nitrate accumulation of herbal fields was more severe than grain fields, which posed potential problems for sustainable production.
学科主题	农业基础科学
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/17004]
专题	农业环境与可持续发展研究所_环境工程研究室
作者单位	中国农业科学院农业环境与可持续发展研究所, 农业部设施农业节能与废弃物处理重点实验室, 北京, 100081
推荐引用方式 GB/T 7714	赵姣姣,刘文科,刘义飞. 河北省安国市药材田与粮作田土壤硝酸盐的累积特征[J]. 中国农业气象,2013,34(3):301-305.
APA	赵姣姣,刘文科,&刘义飞.(2013).河北省安国市药材田与粮作田土壤硝酸盐的累积特征.中国农业气象,34(3),301-305.
MLA	赵姣姣,et al."河北省安国市药材田与粮作田土壤硝酸盐的累积特征".中国农业气象 34.3(2013):301-305.